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Experimental Study on the Adhesive Fuel Features of Inclined Wall-Impinging Spray at Various Injection Pressure Levels in a Cross-Flow Field

Author

Listed:
  • Gengxin Zhang

    (Department of Mechanical Engineering, School of Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK)

  • Penghua Shi

    (Mechanical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan)

  • Panpan Dong

    (Department of Automotive Engineering, Hebei Jiaotong Vocational and Technical College, Shijiazhuang 050035, China)

  • Fangyu Zhang

    (Department of Mechanical Engineering, School of Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK)

  • Yifei Zhang

    (Department of Mechanical Engineering, School of Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK)

  • Hongliang Luo

    (College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)

Abstract

The wall-impingement phenomenon significantly impacts mixture formation, combustible performance, and pollutant release in DISI engines. However, there is insufficient knowledge regarding the behavior of fuel adhesion. Thus, here, we examine adhesive fuel features at various injection pressure levels (5 and 10 MPa) in a cross-flow field (0 to 50 m/s). The RIM optical method was employed to track the expansion and distribution of fuel adhesion. As a result, adhesive fuel features such as area, mass, thickness, and lifetime were assessed. Postprocessing image analysis reveals that fuel adhesion was consistently thinner at the edge region. With increased injection pressure, the cross flow led to a rise in the fuel-adhesion area and mass; however, small changes in pressure did not affect adhesive thickness. Adhesive thickness significantly decreased in the cross flow, indicating enhanced evaporation potential. Furthermore, lifetime prediction was conducted to quantitatively evaluate the impact of cross flow and injection pressure upon fuel adhesion, which could be calculated by examining the decreasing trend in adhesive area. Results show that the lifetime was dramatically reduced with higher cross-flow velocity, and slightly decreased with lower injection pressure. Under injection pressure of 10 MPa, the adhesive lifetime in the cross-flow field of 50 m/s was reduced by 77.5% compared with the static flow field (0 m/s). The experimental results provide corresponding guidance for low-carbon fuel utilization and emission reduction in DISI engines.

Suggested Citation

  • Gengxin Zhang & Penghua Shi & Panpan Dong & Fangyu Zhang & Yifei Zhang & Hongliang Luo, 2023. "Experimental Study on the Adhesive Fuel Features of Inclined Wall-Impinging Spray at Various Injection Pressure Levels in a Cross-Flow Field," Sustainability, MDPI, vol. 15(7), pages 1-16, April.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:7:p:6312-:d:1117520
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    References listed on IDEAS

    as
    1. Safiullah, & Chandra Ray, Samir & Nishida, Keiya & McDonell, Vincent & Ogata, Yoichi, 2023. "Effects of full transient Injection Rate and Initial Spray Trajectory Angle profiles on the CFD simulation of evaporating diesel sprays- comparison between singlehole and multi hole injectors," Energy, Elsevier, vol. 263(PC).
    2. Wang, Chenxi & Pei, Yiqiang & Qin, Jing & Peng, Zhijun & Liu, Yi & Xu, Kai & Ye, Ziwang, 2021. "Laser induced fluorescence investigation on deposited fuel film from spray impingement on viscous film over a solid wall," Energy, Elsevier, vol. 231(C).
    3. Rami Y. Dahham & Haiqiao Wei & Jiaying Pan, 2022. "Improving Thermal Efficiency of Internal Combustion Engines: Recent Progress and Remaining Challenges," Energies, MDPI, vol. 15(17), pages 1-60, August.
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